Unix Switch

In the past, we have introduced some principles of software development, such as the 10 commandments of high quality code and the UNIX design principles described in the UNIX legend (next article). I believe that you can learn from middle school some knowledge of design principles, as I said in the "How Do I Recruit procedures", a good programmer usually consists of its operational skills, knowledge level, experience level and ability four aspects. Here I would like to talk about some of the principles of design, I think these things belong to the long-term experience summed up knowledge. These principles should be understood by every programmer. But...

First, customer description and requirements analysis of a unit to build a server 40 computer room. 　　Room for a total of 5 cabinets, plan each cabinet to put 8 servers, in the room has an administrator operation on all servers, local administrator configuration 1, now need to implement 1 administrator users and 4 ordinary users of all servers for local centralized management. 　　Integrated to the engine room all servers need to achieve local centralized management needs, Qinan-kinan KVM to all of the above requirements to do the following system solutions. Second, the computer room KVM Monitor Management system design plan ...

Simply put, a cluster (cluster) is a group of computers that provide users with a set of network resources as a whole. These individual computer systems are the nodes (node) of the cluster. An ideal cluster is that the user never realizes the nodes at the bottom of the cluster system, in their view, the cluster is a system, not multiple computer systems.     And the administrators of the cluster system can add and revise the nodes of the cluster system at will. Below on the server commonly used three cluster software to do a comparative analysis of the introduction: 1 ...

First, the background, Linux audio system is very incomplete history: 1. OSS3 is the older sound system in the Linux kernel, which has been gradually discarded by 2. OSS4 was developed as a closed source software, so the 2002 ALSA was used to replace OSS3 as the voice architecture in the Linux kernel 3. 2007 4Front Http://www.aliyun.com/zixun/aggregation/3447.html&qu ...

Wine is used to run Windows programs, mainly to play games. Wine, is an excellent Linu system platform under the simulator software, to the Windows system software under the Linux system to operate stably, the software update frequently, and improve, can run many large windows system software. Just stepping into Linux, it is inevitable to sometimes use the Windows program resources, wine provides a platform to run Windows programs. Wine (Wine is not ...)

As cloud computing approaches, IT infrastructure is poised for a storm-like upheaval. Recently, the major server manufacturers frequent movements. EMC, allied to Lenovo last August, announced that it was working with Lenovo to develop next-generation X86 servers, Lenovo's IPDC dedicated servers, new server makers, and sky-cloud, which targets cloud-centric applications, unveiled a "hero" strategy; even IBM Power Bae, the representative of high-end machines, can't sit. , release the "New Power" program, including medium and low-end products included in the upgraded version. Why are these manufacturers ...

We generally use the FCITX Input method framework in the X Windows environment, FCITX is an extensible Input method framework. Currently it supports Linux and Unix systems, such as FreeBSD. It includes three built-in input method engines, pinyin, location, and the input method based on the code table. Here are a few distributions for Linux to illustrate how to install, 1, http://www.aliyun.com/zixun/aggregation/13835.html& ...

PHP Tutorial Conversion timestamps for the common date format and calculation time difference: The default return type is "minutes" function trans_time ($ timestamp) {if ($ timestamp <1) echo 'invalid unix timestamp'; else return date ("ymd h: i: s ", $ timestamp);} // Get ip function g ...

The advent of Microsoft's Windows operating system has been nearly 29, during which Windows has always been firmly in control of desktop dominance, but with the recent changes in the industry upstream pattern and the vigorous movement of the "geo-discovery" campaign, 　　Windows is facing a threat from multi-directional pluralism, most of which is a threat from open source forces. Careful people should find that although the Windows operating system still occupies more than 90% pc desktop, but its brand influence is less than in the past;

By the end of the year, the major companies have to carry out year-end summary and financial liquidation, if the HP's 2014 inventory, Hewlett-Packard Global vice president, China Hewlett-Packard Company group general Manager Jian more willing to use eight words to summarize, namely "growth, innovation, cooperation and landing." That's right! HP in 2014 was the biggest year of change, and it was a fruitful year. In particular, the introduction of HP Fusion system, let us see the key business areas of the most luxurious star-class product lineup. Under the new IT environment, "unmatched user experience" becomes another label for a converged system. Formal this pursuit ...